Tampoon n. : The stopper of a barrel; a bung.

Example:
How do you explain a Tampoon to a four yr old?

Taxonomy
tampon, absorbency, applicator, tube, women, cotton, grams, toxic shock syndrome, cotton tampons, string, outer tube, tampon brands, TSS, menstrual, patent, Tampon applicators, Organic cotton tampons, tampon usage.

Defination from the web:
tampon is a mass of cotton or rayon; or a mixture of the two inserted into a body cavity or wound to absorb bodily fluid. ... The outward appearance of a tampon is similar for all brands, but their absorbency varies. ...